Value of MRCP using oral Gd-DTPA as negative contrast materials in diagnosis of atypical juxtapapillary duodenal diverticulum

Abstract: Objective: To investigate value of magnetic resonance cholangiopancreatography (MRCP) using oral diluted gadolinium (Gd)-diethylenetriamine penta-acetic acid (DTPA) as negative contrast materials in diagnosis of juxtapapillary duodenal diverticulum with atypical imaging features. Methods: Nineteen patients with juxtapapillary duodenal diverticula of which imaging findings were atypical underwent MRCP using oral diluted Gd-DTPA as negative contrast materials after conventional MRCP without any oral contrast materials. Results: Twenty diverticula were revealed in the 19 patients. At conventional MRCP, the diverticula appeared as rounded lesion with high signal intensity. After oral administration of diluted Gd-DTPA, they disappeared at MRCP. These entities were diagnosed as duodenal diverticula for they communicate with duodenal lumen. Conclusion: MRCP using oral Gd-DTPA as negative contrast materials can be helpful in obtaining definitive diagnosis of those juxtapapillary duodenal diverticula without typical imaging features. [Copyright &y& Elsevier]